Switchable chiral mirrors
Switchable chiral mirrors
Mirrors are widely used for redirection of electromagnetic waves in optical systems, making them arguably the most irreplaceable optical component. Metamaterial-based chiral mirrors, composed of a 2D-chiral planar metallic structure backed by a conventional mirror, reflect one circular polarization without changing its handedness, while absorbing the other. Here, three types of switchable chiral mirror are demonstrated. Switching from a chiral mirror to either a conventional mirror, a handedness-preserving mirror, or a chiral mirror of opposite handedness, is realized. These advances are underpinned by switching the handedness of 2D-chiral metamaterial and the associated effect of circular conversion dichroism, which is reported here for the first time. Switching is achieved by exploiting the temperature-activated dielectric-to-metal phase transition of vanadium dioxide to modify the symmetry and chirality of the metamaterial's resonators. Current distributions explain the temperature-controlled optical properties by handedness-selective excitation of reflective electric dipole and absorbing magnetic dipole modes.
chirality, circular conversion dichroism, metamaterials, mirrors, phase transition
Liu, Meng
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Plum, Eric
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Li, Hua
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Duan, Siyu
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Li, Shaoxian
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Xu, Quan
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Zhang, Xueqian
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Zhang, Caihong
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Zou, Chongwen
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Jin, Biaobing
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Han, Jiaguang
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Zhang, Weili
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1 August 2020
Liu, Meng
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Plum, Eric
50761a26-2982-40df-9153-7aecc4226eb5
Li, Hua
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Duan, Siyu
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Li, Shaoxian
b3363a98-efdd-49de-9bd1-4af538ea843b
Xu, Quan
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Zhang, Xueqian
94e50528-12a0-414a-b789-423815daa8e6
Zhang, Caihong
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Zou, Chongwen
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Jin, Biaobing
80795e5a-622d-4e33-8d40-e88c650613d2
Han, Jiaguang
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Zhang, Weili
e7aadbd4-230f-4a39-8b06-9aaef4183de0
Liu, Meng, Plum, Eric, Li, Hua, Duan, Siyu, Li, Shaoxian, Xu, Quan, Zhang, Xueqian, Zhang, Caihong, Zou, Chongwen, Jin, Biaobing, Han, Jiaguang and Zhang, Weili
(2020)
Switchable chiral mirrors.
Advanced Optical Materials, 8 (15), [2000247].
(doi:10.1002/adom.202000247).
Abstract
Mirrors are widely used for redirection of electromagnetic waves in optical systems, making them arguably the most irreplaceable optical component. Metamaterial-based chiral mirrors, composed of a 2D-chiral planar metallic structure backed by a conventional mirror, reflect one circular polarization without changing its handedness, while absorbing the other. Here, three types of switchable chiral mirror are demonstrated. Switching from a chiral mirror to either a conventional mirror, a handedness-preserving mirror, or a chiral mirror of opposite handedness, is realized. These advances are underpinned by switching the handedness of 2D-chiral metamaterial and the associated effect of circular conversion dichroism, which is reported here for the first time. Switching is achieved by exploiting the temperature-activated dielectric-to-metal phase transition of vanadium dioxide to modify the symmetry and chirality of the metamaterial's resonators. Current distributions explain the temperature-controlled optical properties by handedness-selective excitation of reflective electric dipole and absorbing magnetic dipole modes.
Text
Switchable Chiral Mirrors - Accepted Manuscript
- Accepted Manuscript
More information
Accepted/In Press date: 15 April 2020
e-pub ahead of print date: 7 May 2020
Published date: 1 August 2020
Additional Information:
Funding Information:
This work was supported by the National Key Research and Development Program of China (with Grant No. 2017YFA0701004), the National Science Foundation of China (Grant Nos. 61935015, 61875150, 61735012, and 61871212), the Tianjin Municipal Fund for Distinguished Young Scholars (18JCJQJC45600), and the UK's Engineering and Physical Sciences Research Council (Grant No. EP/M009122/1).
Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Keywords:
chirality, circular conversion dichroism, metamaterials, mirrors, phase transition
Identifiers
Local EPrints ID: 439530
URI: http://eprints.soton.ac.uk/id/eprint/439530
ISSN: 2195-1071
PURE UUID: f1cea61b-6ab1-4bca-abd1-20206ea0c74b
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Date deposited: 24 Apr 2020 16:45
Last modified: 17 Mar 2024 05:29
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Contributors
Author:
Meng Liu
Author:
Eric Plum
Author:
Hua Li
Author:
Siyu Duan
Author:
Shaoxian Li
Author:
Quan Xu
Author:
Xueqian Zhang
Author:
Caihong Zhang
Author:
Chongwen Zou
Author:
Biaobing Jin
Author:
Jiaguang Han
Author:
Weili Zhang
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